Process of manufacture of glue and the product thereof



COATING R PLASTIC.

UNITED 3 TATES men e an

was,

PATENT OFFICE IRVING- F. LAUCKS AND CHARLES N. CONE, OF SEATTLE, WASHINGTON, ASSIGNOBS TO I. F. LAUCKS, INC, 01 SEATTLE, WASHINGTON, A. CORPORATION OF WASHING- TON PROCESS OF MANUFACTURE OF GLUE AND THE PRODUCT THEREOF No Drawing.

Our invention relates to the manufacture of adhesive materials, and more particularly materials adaptable to large scale application, for instance as adhesives in making up 5 ply wood, veneers, and the like.

In providing a glue for use in the manufacture of ply wood for instance, certain limiting conditions must be met. Obviously, a primary characteristic of a suitable glue for such use is the strength of bond which it provides. Another necessary quality is workability in mixing and spreading machines, etc., and furthermore the glue after mixing should retain its adhesive properties for a suflicient time to allow of delays which may be incurred before application. Moreover it is often desired to change the proportion of the ingredients of a particular batch of glue for which the dry mixture is already prepared, in order to meet the requirements of a different wood or the like to be glued. It is desirable also that the material be available at a minimum cost.

To the accomplishment of the-foregoing and related ends, the invention, then, consists of the features hereinafter fully described, and particularly set forth in the claims, the following description reciting certain illustrative forms of the invention, which obviously are but a few of the various ways in which the principle of the invention may be employed.

In carrying out our invention, a preferable procedure is as follows: A dry, finely ground vegetable protein-containing-material,such as oil Igggd cake and preferably ground so a bean ca e or if desired, the powered materia o q tamed by extractmg theproteln from soya beans or so a bean cake 1s mixed with E1; 40 drated lime, powderedrosin, or other res1n or com ounds of resins with sodium, calcium or 0 er metals; a manganese compouh'dsucdi as man anese dioxide, manganese sul hate, or o a' sslufii erman anate or their equivalenis capaHe of furnishing available manganese is added; to these dry mixed ingredients there is then added in a suitable mixing apparatus a proper amount of water, either hot or cold, that is, as customarily understood, hot water forinstance being not to exceed stir well; add 90 parts sodium silig ate solu- ..tion about 40 Baum and stir well; add suf- Application filed September 13, 1924. Serial No. 737,576.

abofi, 120 F. and cold water from about 60 F. down to freezing. \Vhen the ingredients are well mixed, a suitable amount of caustic sod as ordinarily the most available and cheapest alkali, is added in aqueous solution and the mixing continued; then a suitable quantity of sodium silicate solution is added having regard to the consistency requirements of the material upon which the adhesive is to be used, whether wood or paper or other material, and whether moist or dry, etc. After"the mixture has reached a proper consistency, as evidenced to those experienced in the art by its color, stringiness, etc.,the signs by which those experienced in the art of vegetable protein glue use are enabled to judge of its consistency,the glue is ready for application to ply wood and veneer, etc. in the customary manner.

If desired, the water soluble compounds of manganese may be omitted from the dry mix and be added directly in the initial water, which may be hot or cold as desired, or the manganese compounds may be added in water solution after the addition of sodium silicate to the mix.

As examples, the following illustrative folkmillgfii are cited: d b

l 1. ix 180 parts groun so a 951L631; with 30 parts hydrated limefand, 36 21??? 80 ground rosin an i h'm 7 part to 10 parts of aotasTsi uTn erman antte; add to 600 to 700 par s water anc mix well add 5 to 30 parts of a 15% caustic soda solution and ficient gate 300 to 400 parts, to bring to proper conslstency, giving finished glue.

(2) Proceed as in No. 1 above, except that in place of potaisium perman'anagle use from 10 to 30 arts 0 man anese ioxi e.

(3) Pi oceed as 1n No. 1 abo vefexcept that in place of potassium permanganate use from 5 to 20 parts of man anese sul hate Rosin and sodium silicate eing agents in the nature of spreaders are of course not de-- sired in every case; depending, as indicated, on the conditions under which the adhesive is to be used.

Other modes of applying the principle of 1 our invention may be employed instead of the one explained, change being made as regards the details herein disclosed, provided the procedure or the ingredients stated by 5 any of the following claims or the e uivalents of such stated procedure or ingre -ents be employed.

We therefore particularly pointout and distinctly claim as our invention 1. An adhesive material embodying vegetable protein containing material erived from oleaginous seeds, in aqueous alkaline media, and a manganese compound.

2. An adhesive material embodyin vege-' 5 table protein containing material derived from oleaginous seeds, in aqueous alkaline media, and a manganese compound in the proportion range of approximately 11/100 per cent to approximately 17 per cent of such 20 compound, such percentage being based on the weight of such vegetable protein containing material.

3. An adhesive material embodyin vegetable protein containing material derived from soya beans, in aqueous alkaline madia,

and potassium permanganate.

4. An adhesive material embodying vegetable protein containing material derived r from soya beans, in aqueous alkaline media,

and potassium permanganate in the proportion range of approximately 11/100 per cent to a proximately 5.5 per cent, such percentage eing based on the weight of such vegetable rotein containing material.

3 5. in adhesive material embodyin vegetable protein containing material derived from soya beans, and lime, and caustic soda and water, and potassium permanganate.

6. An adhesive material embodying vegetable protein containing material derived from soya beans, and lime, and caustic soda and rosin, and water, and potassium permanganate.

7. An adhesive material embodyin vegetable protein containing material derived from soya beans, and caustic soda and water and sodium silicate and potassium permanganate.

In witness whereof, we hereunto subscribe our names this 3d day of Sept, 1924.

IRVING F. LAUCKS. CHARLES N. CONE. 

